135664644 has 24 divisors (see below), whose sum is σ = 325107328. Its totient is φ = 43999200.

The previous prime is 135664643. The next prime is 135664651. The reversal of 135664644 is 446466531.

It is not an unprimeable number, because it can be changed into a prime (135664643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 152332 + ... + 153219.

Almost surely, 2^135664644 is an apocalyptic number.

It is an amenable number.

135664644 is an abundant number, since it is smaller than the sum of its proper divisors (189442684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135664644 is a wasteful number, since it uses less digits than its factorization.

135664644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305595 (or 305593 counting only the distinct ones).

The product of its digits is 207360, while the sum is 39.

The square root of 135664644 is about 11647.5166451909. The cubic root of 135664644 is about 513.8332767367.

The spelling of 135664644 in words is "one hundred thirty-five million, six hundred sixty-four thousand, six hundred forty-four".